ogg_stream_packetin

declared in "ogg/ogg.h";

This function submits a packet to the bitstream for page
encapsulation. After this is called, more packets can be submitted,
or pages can be written out.

In a typical encoding situation, this should be used after filling a
packet with data.
The data in the packet is copied into the internal storage managed by
the ogg_stream_state, so the caller
is free to alter the contents of op after this call has returned.